1. The Plaintiff, the Defendant Company B, and the Defendant Company C, jointly with the Defendant Company B.

1. Facts of recognition;

A. 1) The Plaintiff is a party to the instant condominium building D ground E (hereinafter “instant condominium”) in Seongbuk-gu, Sungnam-si.

(2) For the management of 308 households (office 256 households, 52 households), Defendant B Co., Ltd. (hereinafter “Defendant B”) entrusted the affairs concerning the new construction and sale of the instant aggregate building to F Co., Ltd. (hereinafter “F”) as an executor planning to construct the instant aggregate building.

3) Defendant C Co., Ltd. (hereinafter “Defendant C”)

(B) The construction of the instant aggregate building is the construction contractor that completed the construction by contract. (B) At the time of the construction of the instant aggregate building, F, as the object owned by each household, sold to sectional owners each time the construction of the instant aggregate building was carried out. On September 27, 2013, after obtaining approval for use of the instant aggregate building on September 27, 2013, F transferred the instant aggregate building ownership to buyers around that time.

2) Of the sales contracts concluded between F and buyer, the parts related to the instant case are as follows (hereinafter F is referred to as “A”, “B”, “B”, “B”, and Defendant B”.

Article 14 (Defect Repair of Defects) ① A cannot request repair of defects, and Byung shall be responsible for repair of defects in the construction of the building in question pursuant to the Framework Act on the Construction Industry (Matters of Special Agreement). (6) The object of sale in question is to be constructed as a project to be implemented by Gap under a land trust method after being entrusted with the land from the due and being implemented by Gap under a management-type land trust method, and Gap and Eul agree to the following matters, since this project exclusively performs the preservation of trust property and the ownership transfer business on the register for the full payment of the proceeds for sale

(1) Of the obligations of all sellers relating to a contract for sale in lots, the supplier, seller or actual entrepreneur at the time of cancellation of the contract.